Rotatable coupler for a prosthetic leg



FIG. 1 is a perspective view of a rotatable coupler for a prosthetic leg, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a side view thereof. 

The ornamental design of a rotatable coupler for a prosthetic leg, as shown and described. 